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| Postholes in road ... AMS Horizontal (normal) ... 10 Jun 1981 |
| Late wall at J/5 after removal of blockage and ash layers ... AMS west 1610 Horizontal (normal) ... June 1981 |
| Drain III in north-south road (Area III). From west ... AMS east 184 Horizontal (normal) ... 22 Jun 1981 |
| Drain III, from west ... AMS east 1134 Horizontal (normal) ... 15 Jun 1981 |
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